2Anderson TD, Ross JP, Roby RK, et al. A validation study for the extraction and analysis of DNA from human nail material and its application to forensic casework [ J ]. J Forensic Sci, 1999, 44 (5): 1053
9Farrell L E, Roman J, Sunquist M E. Dietary separation of sympatric carnivores identified by molecular mlalysis of scals[ J ]. M ol Ecol,2000,9 : 1583-1590.
10Janecka J E, Jackson R, Zhang Yuqiang, et al. Population monito- ring of snow leopards using noninvasive collection of scat samples: a pilot study[ J ]. Animal Conservation ,2008,11 (5) :401-411.
